Which expression has a value of 66? A. (16 : 3.2) * 2 + 0.2 * (8 + 82) B. [ (16 : 3.2) * (2 + 0.2) ] * 8 + 82 C. 16 : [ (3.2 * 2) + (0.2 * 8) ] + 82 D. [16 : (3.2 * 2) + 0.2 * (8 + 82) ]

Question

Sammy Coleman

Mathematics

7 June, 16:53

Which expression has a value of 66? A. (16 : 3.2) * 2 + 0.2 * (8 + 82) B. [ (16 : 3.2) * (2 + 0.2) ] * 8 + 82 C. 16 : [ (3.2 * 2) + (0.2 * 8) ] + 82 D. [16 : (3.2 * 2) + 0.2 * (8 + 82) ]

+1

Answers (1)

Know the Answer?

Zander · Answer 1

Answer: none

Step-by-step explanation:

(A)

(16:32/10) * 2 + 0.2 * (90)

Using bodmas principle; solve bracket

(16*10/32) * 2 + (2/10*90)

10+18 = 28

(B)

{ (16:32/10) * (2+2/10) } * 90

Open brackets

{ (16*10/32) * (22/10) } * 90

(5*11/5) * 90

11*90 = 990

(C)

16:{ (32/10*2) + (2/10*8) } + 82

Open brackets, solve division first, dolled by addition

16: (32/5 + 8/5) + 82

16: (40/5) + 82

16:8 + 82

2+82 = 84

(D)

[16: (32/10 * 2) + 0.2 * (90) ]

16: (32/5) + 2/10 * 90

Solve division

16*5/32 + 18

5/2 + 18

L. c. m of denominator (2&1) = 2

(5+36) / 2 = 41/2

=20.5